How to hire a plumber in Washington state

Research permitting requirements for your plumbing job at the Washington State site or by calling the Department of Labor & Industries hotline at 1-800-547-8367.

Check online review sites for “verified reviews,” which a third party can confirm are legitimate.

What kind of work can a plumber do in Washington?

A plumber with a specialty license can only take serious plumbing jobs, including installs, alterations, repairs, and renovations.

Plumbers with journeymen certification have at least 8,000 hours of experience and can handle any job, residential or commercial.

Plumbers with specialty plumber certification have at least 6,000 hours of experience and can handle a narrower range of jobs depending on their certification (residential, pump & irrigation, domestic well, and backflow).